What is the average property tax rate in Connecticut?

Statewide, Connecticut's effective property-tax rate is 1.811% — the state median real-estate taxes ($6,643) divided by the state median home value ($366,900), from the Census ACS 2020-2024 5-year estimates. The national figure is about 0.937%, which puts Connecticut at #3 of 51 (1 = highest). Individual counties vary widely; the table above shows every one.

Which Connecticut county has the highest property taxes?

By effective rate, Greater Bridgeport Planning Region is highest in Connecticut at 2.022% (median bill $8,670), and Northeastern Connecticut Planning Region is lowest at 1.422% (median bill $4,375). Ranked by dollars paid rather than rate the order changes, because home values differ so much across the state — the table above shows both columns and sorts on either.

What property tax exemptions are available in Connecticut?

The Homeowners' Elderly/Disabled Circuit Breaker program gives resident owners who are 65 and over, or totally disabled, and whose annual income falls under set limits a credit calculated by the local assessor and applied by the tax collector to the real property tax bill. The maximum credit is $1,250 for married couples and $1,000 for single persons, graduated by income. Apply with the assessor between February 1 and May 15. Eligibility and filing are handled by your county assessor, and the exemption you qualify for changes your bill far more than the county you are in — the rates above are county medians and do not account for any exemption.

How do I appeal a property tax assessment in Connecticut?

File an appeal in writing or by electronic mail with the town's board of assessment appeals on or before February twentieth; the board must notify each timely appellant of the hearing date no later than March first. The board may elect not to hear commercial, industrial, utility or apartment property assessed above one million dollars, in which case the owner appeals directly to Superior Court under section 12-117a, within two months of the mailed notice. Missing the deadline usually means waiting a full year, so check the date on your own assessment notice rather than relying on a general figure.

When are property taxes due in Connecticut?

Section 12-142 lets each municipality's legislative body decide whether its property tax is due in a single installment, two semiannual installments or four quarterly installments, and set the dates. Under section 12-146 an unpaid installment becomes delinquent and the unpaid principal bears interest at eighteen per cent per annum from the due date, subject to a minimum charge of two dollars per installment. If your taxes are paid through a mortgage escrow account, your servicer pays on this schedule on your behalf.

How is property assessed in Connecticut?

Connecticut assessment is municipal. Section 12-62a establishes a uniform assessment date of October first and requires each municipality to assess all property at a uniform rate of seventy per cent of present true and actual value. Section 12-62 requires each town to implement a revaluation not later than five years after the October first assessment date on which its previous revaluation became effective. This is why an effective rate computed from market value — as every rate on this page is — will not match the millage rate printed on your bill: the two are applied to different bases.

Connecticut property taxes by county

Statewide effective rate 1.811% · national rank #3 of 51 (1 = highest) · 9 county-equivalents · U.S. Census ACS 2020–2024 5-year

Across Connecticut, the median owner-occupied home pays $6,643 a year in real-estate taxes on a median home value of $366,900 — an effective property-tax rate of 1.811%. That ranks Connecticut #3 of 51 states and the District of Columbia (1 = highest). This page carries all 9 Connecticut county-equivalents in the Census data — 9 with a published effective rate — sortable by rate, taxes paid, home value, income, or five-year change. It also sets out how property tax actually works in Connecticut: how property is assessed, which exemptions exist and who qualifies, the deadline and body for an appeal, and the payment schedule and penalties — each hand-sourced from official Connecticut sources. Figures are U.S. Census Bureau ACS 2020-2024 5-year estimates.

Statewide figures Connecticut · ACS 2020–2024 5-year

Effective tax rate: 1.811%
Median real-estate taxes: $6,643 ± $25
Median home value: $366,900
Median household income: $95,781
National rank: #3 of 51
County-equivalents: 9

How property tax varies across Connecticut

Across Connecticut's 9 county-equivalents with a published rate, the effective property-tax rate runs from 2.022% in Greater Bridgeport Planning Region down to 1.422% in Northeastern Connecticut Planning Region — a 1.4× spread inside a single state, which is why a statewide average tells a buyer very little.

The largest median real-estate tax bill in Connecticut is $9,295 in Western Connecticut Planning Region, which ranks #8 of 9 by RATE — while the state's highest rate, 2.022%, is in Greater Bridgeport Planning Region, where the median bill is $8,670. Dollars and rate are different questions and rank counties differently.

Measured against the national median effective rate of 0.937%, 9 of Connecticut's 9 ranked counties sit above it and 0 below. Connecticut as a whole ranks #3 of 51 (1 = highest).

Median home value statewide is $366,900, but within Connecticut it ranges from $652,900 in Western Connecticut Planning Region to $307,600 in Northeastern Connecticut Planning Region — the denominator of the effective rate, and the main reason two counties with similar bills can show very different rates.

Statewide, the median real-estate tax bill equals about 6.9% of median household income. That share is heaviest in Greater Bridgeport Planning Region (9.7%) and lightest in Northeastern Connecticut Planning Region (4.8%).

Estimate a Connecticut property tax bill

Connecticut property-tax estimator

County

Home value (USD)

Estimated annual property tax: $8,695

Greater Bridgeport Planning Region, CT effective rate 2.022% × home value $430,000

See full Greater Bridgeport Planning Region property-tax data →

A median-based estimate, not a bill: home value × the county effective rate. It cannot know your exemptions, assessment ratio, special districts, or homestead caps.

A median-based estimate, not a quote, an assessment, or a tax bill — it cannot know your assessed value, exemptions, or special districts. How this is computed.

Every Connecticut county

All 9 Connecticut county-equivalents in the Census data (9 with a published effective rate). Click a column heading to sort. Counties in bold have a full detail card further down this page — margins of error, nearby counties, and their five-year trend.

Filter counties

Connecticut county-equivalents by effective property-tax rate (highest first). Median taxes, home value and income are U.S. Census ACS 2020–2024 5-year estimates; the five-year change compares the non-overlapping 2015–2019 and 2020–2024 periods.

Greater Bridgeport Planning Region	2.022%	$8,670	$8,915	$8,161	$428,800	$89,667	9.7%	#1	#80	—
Capitol Planning Region	1.994%	$6,454	$6,498	$6,373	$323,700	$93,394	6.9%	#2	#90	—
South Central Connecticut Planning Region	1.914%	$6,759	$6,812	$6,656	$353,100	$88,197	7.7%	#3	#111	—
Naugatuck Valley Planning Region	1.883%	$5,983	$6,131	$5,698	$317,700	$86,191	6.9%	#4	#119	—
Lower Connecticut River Valley Planning Region	1.674%	$6,357	$6,466	$6,171	$379,700	$104,428	6.1%	#5	#208	—
Northwest Hills Planning Region	1.667%	$5,593	$5,653	$5,482	$335,600	$93,551	6.0%	#6	#212	—
Southeastern Connecticut Planning Region	1.617%	$5,228	$5,223	$5,235	$323,400	$86,586	6.0%	#7	#248	—
Western Connecticut Planning Region	1.424%	$9,295	$9,405	$9,045	$652,900	$128,188	7.3%	#8	#440	—
Northeastern Connecticut Planning Region	1.422%	$4,375	$4,398	$4,323	$307,600	$90,589	4.8%	#9	#441	—

Data: U.S. Census Bureau, American Community Survey (ACS) 2020-2024 5-year estimates — tables B25103 (real-estate taxes), B25077 (home value), B19013 (household income) — and the 2024 Census county gazetteer. Public domain (Title 17 U.S.C. §105).

How property tax works in Connecticut

Assessment, exemptions, appeals and payment are set by Connecticut law and practice, so they apply to every county in the table above. Each fact is taken from an official government source and linked to it.

How property is assessed: Connecticut assessment is municipal. Section 12-62a establishes a uniform assessment date of October first and requires each municipality to assess all property at a uniform rate of seventy per cent of present true and actual value. Section 12-62 requires each town to implement a revaluation not later than five years after the October first assessment date on which its previous revaluation became effective. source →
Exemptions & credits: The Homeowners' Elderly/Disabled Circuit Breaker program gives resident owners who are 65 and over, or totally disabled, and whose annual income falls under set limits a credit calculated by the local assessor and applied by the tax collector to the real property tax bill. The maximum credit is $1,250 for married couples and $1,000 for single persons, graduated by income. Apply with the assessor between February 1 and May 15. source →
Appealing an assessment: File an appeal in writing or by electronic mail with the town's board of assessment appeals on or before February twentieth; the board must notify each timely appellant of the hearing date no later than March first. The board may elect not to hear commercial, industrial, utility or apartment property assessed above one million dollars, in which case the owner appeals directly to Superior Court under section 12-117a, within two months of the mailed notice. source →
Payment schedule & penalties: Section 12-142 lets each municipality's legislative body decide whether its property tax is due in a single installment, two semiannual installments or four quarterly installments, and set the dates. Under section 12-146 an unpaid installment becomes delinquent and the unpaid principal bears interest at eighteen per cent per annum from the due date, subject to a minimum charge of two dollars per installment. source →
Why rates vary within the state: Assessment and taxation are administered on the municipal level, so practice and rates differ town by town. The Office of Policy and Management states it has limited authority: it cannot waive taxes or interest on delinquent taxes and cannot override a determination made by a local assessor or tax collector. Its role is issuing guidelines for the exemption and credit programs the state reimburses. source →
What makes this state's system distinctive: Connecticut taxes motor vehicles as property, and legislation caps the motor vehicle mill rate at 32.46 mills where that rate is lower than the rate on real and personal property; no district or borough may set a combined vehicle rate above the cap. Mill rates for a fiscal year are based on the grand list from two years prior. source →

Hand-sourced from official government sources — not a substitute for your own assessor's notice, and not legal or tax advice. Where a fact isn't confirmed on an official source, it is left off rather than guessed, which is why some states show fewer rows than others.

Official Connecticut tax authority

Property tax in Connecticut is assessed and collected locally. For an individual property's assessed value, exemptions, and bill, use the county assessor or appraisal district. For statewide rules and forms:

Connecticut Office of Policy and Management →

This state link is hand-verified. Per-county assessor URLs are not published (no verified nationwide source exists) and are never guessed.

Frequently asked questions

What is the average property tax rate in Connecticut?: Statewide, Connecticut's effective property-tax rate is 1.811% — the state median real-estate taxes ($6,643) divided by the state median home value ($366,900), from the Census ACS 2020-2024 5-year estimates. The national figure is about 0.937%, which puts Connecticut at #3 of 51 (1 = highest). Individual counties vary widely; the table above shows every one.
Which Connecticut county has the highest property taxes?: By effective rate, Greater Bridgeport Planning Region is highest in Connecticut at 2.022% (median bill $8,670), and Northeastern Connecticut Planning Region is lowest at 1.422% (median bill $4,375). Ranked by dollars paid rather than rate the order changes, because home values differ so much across the state — the table above shows both columns and sorts on either.
What property tax exemptions are available in Connecticut?: The Homeowners' Elderly/Disabled Circuit Breaker program gives resident owners who are 65 and over, or totally disabled, and whose annual income falls under set limits a credit calculated by the local assessor and applied by the tax collector to the real property tax bill. The maximum credit is $1,250 for married couples and $1,000 for single persons, graduated by income. Apply with the assessor between February 1 and May 15. Eligibility and filing are handled by your county assessor, and the exemption you qualify for changes your bill far more than the county you are in — the rates above are county medians and do not account for any exemption.
How do I appeal a property tax assessment in Connecticut?: File an appeal in writing or by electronic mail with the town's board of assessment appeals on or before February twentieth; the board must notify each timely appellant of the hearing date no later than March first. The board may elect not to hear commercial, industrial, utility or apartment property assessed above one million dollars, in which case the owner appeals directly to Superior Court under section 12-117a, within two months of the mailed notice. Missing the deadline usually means waiting a full year, so check the date on your own assessment notice rather than relying on a general figure.
When are property taxes due in Connecticut?: Section 12-142 lets each municipality's legislative body decide whether its property tax is due in a single installment, two semiannual installments or four quarterly installments, and set the dates. Under section 12-146 an unpaid installment becomes delinquent and the unpaid principal bears interest at eighteen per cent per annum from the due date, subject to a minimum charge of two dollars per installment. If your taxes are paid through a mortgage escrow account, your servicer pays on this schedule on your behalf.
How is property assessed in Connecticut?: Connecticut assessment is municipal. Section 12-62a establishes a uniform assessment date of October first and requires each municipality to assess all property at a uniform rate of seventy per cent of present true and actual value. Section 12-62 requires each town to implement a revaluation not later than five years after the October first assessment date on which its previous revaluation became effective. This is why an effective rate computed from market value — as every rate on this page is — will not match the millage rate printed on your bill: the two are applied to different bases.

Compare & explore

See the national highest and lowest property-tax rates, or read the methodology behind every figure. The national median effective rate is 0.937%; Connecticut's statewide figure is 1.811%.